The 2017 Audi R8 Electrics, Electronics, and …The 2017 Audi R8 Electrics, Electronics, and Infotainment Systems eSelf Study Program 970173 ii This eSSP contains video links which

i

The 2017 Audi R8 Electrics, Electronics, and Infotainment Systems

eSelf Study Program 970173

ii

This eSSP contains video links which you

can use to access interactive media.

Audi of America, LLC Service Training Created in the U.S.A. Created 1/2016 Course Number 970173©2016 Audi of America, LLC

All rights reserved. Information contained in this manual is based on the latest information available at the time of printing and is subject to the copyright and other intellectual property rights of Audi of America, LLC., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, nor may these materials be modified or reposted to other sites without the prior expressed written permission of the publisher.All requests for permission to copy and redistribute information should be referred to Audi of America, LLC.

Always check Technical Bulletins and the latest electronic service repair literature for information that may supersede any information included in this booklet.

Revision 1:1/2016

iii

This eSelf Study Program teaches a basic knowledge of the design and functions of new models, new automotive components or technologies. It is not a Repair Manual! All values given are intended as a guideline only. For maintenance and repair work, always refer to the current technical literature.

Note

Reference

Electrical system ................................................................................ 1

Introduction ...............................................................................................................................................................1

Control module profiles ............................................................................................................................................9

Exterior lights ......................................................................................................................................................... 27

Audi drive select ...................................................................................................................................................... 31

Multifunction steering wheel ................................................................................................................................. 33

Infotainment ....................................................................................35

Sound systems ........................................................................................................................................................ 36

Safety belt microphone .......................................................................................................................................... 38

Antenna overview ................................................................................................................................................... 39

Climate control .................................................................................41

Introduction ............................................................................................................................................................ 41

Passenger compartment ventilation .................................................................................................................... 42

Refrigerant circuit ................................................................................................................................................... 43

Service ..............................................................................................44

Inspection and maintenance ................................................................................................................................. 44

Self-study programs .........................................................................45

Knowledge assessment ....................................................................46

1

The 420 A/75 Ah AGM battery of the R8 is located in the luggage compartment. The jump start terminals are located under a service flap adjacent to the battery’s nega-tive and positive terminals.

Battery Monitoring Control Module J367 is integrated into the negative battery cable, similar to other current Audi vehicles.

The main fuse panel is located on the left hand side of the battery. It includes Battery Interrupt Igniter N253. If N253 deploys, power to the alternator and starter will be de-energized.

In addition to other fuses, the main fuse panel contains the high amperage fuses for the electro-mechanical steering and ABS systems.

Fuse panel in footwell on right

Battery

Main fuse panel adjacent to battery

Introduction

Electrical system

2

Fuse and relay panel below parcel shelf

Fuse and relay panel in E-box on right

Fuse and relay panel in E-box on left

641_128

3

J386

J387

J519

J587

J849

E87J844

G85

J527J285 J764

J792

J745

J104

J500

J533A32

J492

A28

J136

J234

J521

Installation locations of control modules

Key:

A28 Right Led Headlamp Power Output Module 2A32 Left Led Headlamp Power Output Module 2

E87 Front A/C Display Control Head

G85 Steering Angle Sensor

J104 ABS Control ModuleJ136 Memory Seat/Steering Column Adjustment Control Module

J217 Transmission Control ModuleJ234 Airbag Control Module

J250 Electronic Damping Control ModuleJ285 Instrument Cluster Control Module

J386 Driver Door Control ModuleJ387 Front Passenger Door Control ModuleJ393 Comfort System Central Control Module

J492 All Wheel Drive Control Module

J500 Power Steering Control ModuleJ502 Tire Pressure Monitoring Control ModuleJ519 Vehicle Electrical System Control Module 1J521 Front Passenger Memory Seat Control Module

Descriptions for the precise locations of the control modules and instructions for installation and removal can be found in ElsaPro. Some of the control modules shown in this overview are optional equipment and may not be installed in the vehicle.

4

J772

J525

J250

J886

J502

J217

J623

J624

J1006

J794

J393

J540

J136

J234

J521

641_043

J525 Digital Sound System Control ModuleJ527 Steering Column Electronics Control ModuleJ533 Data Bus On Board Diagnostic InterfaceJ540 Electromechanical Parking Brake Control ModuleJ587 Selector Lever Sensor System Control Module

J623 Engine Control ModuleJ624 Engine Control Module 2

J745 Cornering Lamp And Headlamp Range Control ModuleJ764 Electronic Steering Column Lock Control ModuleJ772 Rearview Camera System Control ModuleJ792 Active Steering Control Module

J794 Information Electronics Control Module 1

J844 Automatic High Beam Assist Control ModuleJ849 Sensor Electronics Control ModuleJ886 Seat Belt Microphone Control Module

J1006 Transmission Control Module 2

5

Topology

Powertrain CAN

Convenience CAN Display and Operation CAN

Diagnostics CAN

Extended CAN FlexRay

Key:

The topology shows all control modules with connectivity to the bus systems.

Some of the control modules shown here are optional or country-specific equipment or are scheduled for introduc-tion at a later date.

Driver Door Control ModuleJ386

Electronic Steering Column Lock Control ModuleJ764

Anti-Theft Alarm System SensorG578

Front Passenger Door Control ModuleJ387

Vehicle Electrical System Control ModuleJ519

Rain/Light Recognition SensorG397

Humidity SensorG355

Alarm HornH12

Wiper Motor Control ModuleJ400

Air Quality SensorG238

Humidity Sensor In Fresh Air Intake DuctG657

Data Link Connector

Data Bus On Board Diagnostic InterfaceJ533

Comfort System Central Control ModuleJ393

Memory Seat/Steer-ing Column Adjust-ment Control ModuleJ136

Front Passenger Memory Seat Control ModuleJ521

Light Switch E1

Garage Door Opener Control HeadE284

High Pressure SensorG65

Garage Door Opener Control Module J530

Engine Control ModuleJ623

Airbag Control ModuleJ234

Selector Lever Sensor System Control ModuleJ587

Passenger Occupant Detection System Control ModuleJ706

AlternatorC

Front Passenger Door Control ModuleJ367

Left Auxiliary High Beam Bulb M67

Right Auxiliary High Beam BulbM68

Rear Spoiler Control ModuleJ223

Engine Control Module 2J624

Transmission Control ModuleJ217

Transmission Control Module 2 J1006

Front Passenger Windshield Wiper Motor Control ModuleJ584

Anti-Theft Immobilizer Reader CoilD2

6

LIN bus

Sub-bus systems

MOST busChassis CAN bus

Modular Infotainment Platform (MIB) CAN

The FlexRay topology does not represent the actual con-figuration of the control modules. This also applies to the control modules on the MOST bus.

LVDS

Flap Control Servomotors1 – 6

Fresh Air Blower Control ModuleJ126

Steering Column Electronics Control ModuleJ527

Instrument Cluster Control ModuleJ285

Digital Sound System Control ModuleJ525

Information Electronics Control Module 1J794

Rearview Camera System Control ModuleJ772

Multimedia System Control HeadE380

Automatic High Beam Assist Control ModuleJ844

ABS Control ModuleJ104

641_044a

Tire Pressure Monitoring Control ModuleJ502

Power Steering Control ModuleJ500

Electromechanical Parking Brake Control ModuleJ540

Steering Angle SensorG85

Active Steering Control ModuleJ792

All Wheel Drive Control ModuleJ492

Electronic Damping Control ModuleJ250

Sensor Electronics Control ModuleJ849

Cornering Lamp And Headlamp Range Control Module J745

Left LED Headlamp Power Output Module 2 A32

Right LED Head-lamp Power Output Module 2 A28

Multifunction Steering Wheel Control ModuleJ453

Front A/C Display Control HeadE87

Seat Belt Microphone Control ModuleJ886

7

Bus system Cable color

Configuration Max. data transfer rate

Property

Powertrain CAN Electrical two-core bus system 500 kbit/s not single wire capable

Convenience CAN Electrical two-core bus system 500 kbit/s not single wire capable

Chassis CAN bus Electrical two-core bus system 500 kbit/s not single wire capable

Extended CAN Electrical two-core bus system 500 kbit/s not single wire capable

Display and Operation CAN Electrical two-core bus system 500 kbit/s not single wire capable

Modular Infotainment Platform (MIB) CAN

Electrical two-core bus system 500 kbit/s not single wire capable

Diagnostics CAN Electrical two-core bus system 500 kbit/s not single wire capable

FlexRay Electrical two-core bus system 10 Mbit/s not single wire capable

MOST bus (150) Fiber-optic bus system 150 Mbit/s Ring structure:an open circuit will result in total system failure

LIN bus Electrical single-core bus system 20 kbit/s Capable of single-core operation

Sub-bus system Electrical two-core bus system 500 kbit/s not single wire capable

LVDS Electrical two-core bus system approx. 200 Mbit/s not single wire capable

Overview of the bus systems

ReferenceFor further information about the FlexRay bus, refer to eSelf Study Program 970103, The 2011 Audi A8 Convenience Electronics and Networking Systems. For information about the LVDS and MOST 150 buses, refer to eSelf Study Program 970153, The 2016 Audi TT Vehicle Electrics, Electronics and Infotainment Systems, and eSelf-Study Program 970163, The 2017 Audi Q7 Onboard Power Supply and Networking System.

MOST 150

The MOST 150 bus was first used in the 2015 Audi A3 and subsequently in the 2016 Audi TT and 2017 Audi Q7 models. In the Audi R8 up to three control modules are integrated in the MOST ring in the following order:

› Information Electronics Control Module 1 J794. › Instrument Cluster Control Module J285. › Digital Sound System Control Module.

J794 acts both as the diagnosis manager and as the system manager for the MOST bus. As always with the MOST bus in Audi vehicles, the control modules are interconnected by an electronic ring break diagnostics wire. This line is only required for electronic ring break diagnostics in the event of a fault.

FlexRay

ABS Control Module J104 and Sensor Electronics Control Module J849 are the only two modules transferring data over the FlexRay data bus.

The FlexRay wires are twisted in the same way as the CAN wires. They are additionally sheathed. However, the sheath-ing does not provide shielding against electromagnetic interference; it only minimizes effects of external influ-ences, such as dampness and temperature on the core’s characteristic impedance. In principle, sections of FlexRay lines can be replaced. Always follow the instructions in ElsaPro regarding replacement of FlexRay wires.

LVDS

LVDS (Low Voltage Differential Signal) is used for image transfer between Information Electronics Control Module 1 J794 and Instrument Cluster Control Module J285.

Unlike with the FlexRay, the sheathing of the LVDS wires not only protects against mechanical stresses and mois-ture, but also shields against electromagnetic interference. In the event of a fault, LVDS lines must always be com-pletely replaced.

audi://docs/s?d=970103_2011_Audi_A8_Convenience_Networking.pdf


audi://docs/s?d=970153_The_2016_Audi_TT_Vehicle_Electrics_Electronics_and_Infotainment_Systems.pdf

audi://docs/s?d=970163_The_2017_Audi_Q7_Onboard_Power_Supply_and_Networking_System.pdf


8

Special features of the control modules used

The control modules used in the R8 are adopted from various other Audi models. Because of this, there are differ-ences in enabling, encoding and the Test Plans that can be performed during control module replacement.

Some control modules use an old procedure that is based on a comparison of target and actual values.

Other control modules use a new procedure. The new procedure adopts, where possible, custom adjustments and activations in addition to the coding of the control module.

The following table identifies the old and new modules of the 2017 R8.

Old procedure modules New procedure modules

Control module designationAddress Word

Engine Control Module J623 01

Engine Control Module 2 J624 11

Transmission Control Module J217 02

All Wheel Drive Control Module J492 22

Driver Door Control Module J386 42

Front Passenger Door Control Module J387 52

ABS Control Module J104 03

Power Steering Control Module J500 44

Cornering Lamp And Headlamp Range Control Module J745

55

Tire Pressure Monitoring Control Module J502 65

Steering Column Electronics Control Module J527

16

Data Bus On Board Diagnostic Interface J533 19

Active Steering Control Module J792 18

Sensor Electronics Control Module J849 3B

Electromechanical Parking Brake Control Module J540

53

Transmission Control Module 2 J1006 C2

Memory Seat/Steering Column Adjustment Control Module J136

06

Front Passenger Memory Seat Control Module J521

36

Comfort System Central Control Module J393 46

Vehicle Electrical System Control Module J519

09

Control module designationAddress Word

Automatic High Beam Assist Control Module J844

20

Electronic Damping Control Module J250 14

Airbag Control Module J234 15

Seat Belt Microphone Control Module J886 A6

Instrument Cluster Control Module J285 17

Digital Sound System Control Module J525 47

Front A/C Display Control Head E87 08

Rearview Camera System Control Module J772

6C

Information Electronics Control Module 1 J794

5F

Selector Lever Sensor System Control Module J587

81

9

47 Ω 47 Ω

47 Ω 47 Ω

47 Ω 47 Ω

47 Ω 47 Ω

J849

J104

Branch 4

Branch 1

J533

Control module profiles

Designation Data Bus On Board Diagnostic Interface J533

Equipment Always installed

Installation location On the bulkhead at the top left

Task › Network system gateway › Controller for FlexRay bus › Diagnostic master › Energy management control

Address Word 19

Data bus communication › User of Convenience CAN, Powertrain CAN, Chassis CAN, Display and Operation CAN, Extended CAN, Diagnostic CAN and FlexRay buses.

› LIN master of Battery Monitoring Control Module J367 and Alternator C

Special features › Not a participant of the Modular Infotainment Platform (MIB) CAN › Not a participant of the MOST bus

Gateway

641_129

641_130

J533 is the controller for the FlexRay bus. All FlexRay control modules are connected to J533 within various branches. In this configuration J533 is referred to as the "active hub" or "active node". If only one control module is connected to a branch, this is referred to as a "point to point" connection.

Only two FlexRay users are connected to J533 in the Audi R8.

› ABS Control Module J104 is connected to branch 1. › Sensor Electronics Control Module J849 connected to

Branch 4.

This illustration differentiates between the bus positive cable (pink) and the bus negative cable (green) regarding the configuration of the control modules and thus reflects the actual situation.

Two resistors each having a resistance of 47 Ω (94 Ω in total) are connected to the end of each branch in the control module. After disconnecting the control module connector, the resistance value of 94 Ω can be measured by connecting a multimeter between the connecting pins of the bus positive and the bus negative at the relevant control module.

Data Bus On Board Diagnostic InterfaceJ533

Connection

10

Designation Vehicle Electrical System Control Module J519 / also referred to as BCM1 (Body Control Module 1)


Installation location In the footwell on the right above the fuse box

Task Exterior lights master and activation of the front lights

Limp-home turn signal master in case of failure of J393

Interior lighting master

A/C functions › Activation of front seat heating › Activation of A/C Compressor Regulator Valve N280 and A/C Clutch N25

Integration functions › Parking

› Park assist › Activation of front and rear acoustic signal generators

Other functions › Reading input from the following senders/sensors/switches:

› Ambient temperature › New engine coolant, windshield washer fluid, brake fluid › Brake pad wear › Hood contact › Temperature sensor for seats › Start-stop button, rear spoiler, park assist, ESP, hazard warning flashers

› Activating the following actuators/control elements: › Signal horn › Windshield washer pump › Heating the windshield washer jets › Seat heater, front › Engine bay lights › Interior lights, glove box light

Address Word 09

Data bus communication › Convenience CAN user › J519 is the LIN master for:

› LIN 1: Light Switch E1, Rain/Light Recognition Sensor G397, Humidity Sensor G355 and Wiper Motor Control Module J400

› LIN 2: High Pressure Sensor G65, Humidity Sensor In Fresh Air Intake Duct G657, Air Quality Sensor G238, and Garage Door Opener Control Module J530

› LIN 3: Left and Right Auxiliary High Beam Bulbs M67 and M68

Special feature Fault finding notes:Regarding the LIN slave configuration, J519 has a duplicated pin. For example, LIN 1 is dis-tributed to 2 pins (A18, C2) which are, however, connected internally within the control module. This means that the control modules connected to pin C2 are also affected in the event of a short circuit to positive or negative at pin A18.

Onboard power supply

641_131


11

641_132

Comfort System Central Control ModuleJ393

Designation Comfort System Central Control Module J393 / also referred to as BCM2 (Body Control Module 2)


Installation location Below the parcel shelf on the left

Task Central locking system master

Turn signal master

Integration functions › Terminal management system › Entry and start authorization › Immobilizer (master) › Anti-theft alarm system

Other functions › Reading input from the following senders/sensors/switches:

› Brake light switch › Ignition starter button › P signal › Central locking antenna › Capacitive sensors of door handles › Entry and start authorization antennas

› Activating the following actuators/control elements: › Rear lights › Signal for dynamic turn signal operation › Rear hatch motor › Luggage compartment release › Fuel tank flap lock › Relay for external sockets › Terminal 15 relay › Luggage compartment lights › Rear lighting

Address Word 46

Data bus communication › Convenience CAN participant › J393 is the LIN master for:

› LIN 1: Garage Door Opener Control Head E284, Anti-Theft Alarm System Sensor G578 and Rear Spoiler Control Module J223

› LIN 2: Alarm Horn H12 › LIN 3: Electronic Steering Column Lock Control Module J764 and Anti-Theft Immobilizer

Reader Coil D2

Special features › J393 is the immobilizer system master › The central locking antenna is integrated with the control module printed circuit board

Comfort/convenience system

12

641_133

Driver Door Control ModuleJ386

Designation Driver Door Control Module J386


Installation location In driver's door

Task Controlling the electrical and electronic components in and on the driver's door › Reading input from the following senders/sensors/switches:

› Switches/buttons on the door panel, for example: window lifters, rear hatch release, electric door mirrors, central locking

› Activating the following actuators/control elements: › Lights and components in and on the door trim, turn signals in door mirror

Address Word 42

Data bus communication Convenience CAN participant

Special feature J386 reads input from the rear hatch release switch. However, the release motor is activated by Comfort System Central Control Module J393

Driver control modules

Designation Front Passenger Door Control Module J387


Installation location In front passenger's door

Task Controlling the electrical and electronic components in and on the front passenger's door › Reading input from the following senders/sensors/switches:

› Switches/buttons on the door panel, for example: window lifters, central locking › Activating the following actuators/control elements:

› Lights and components in and on the door trim, turn signals in door mirror

Address Word 52


13

641_134

Memory Seat/Steering Column Adjustment Control ModuleJ136

Designation Memory Seat/Steering Column Adjustment Control Module J136

Equipment Optional equipment

Installation location Below the driver's seat

Task Controlling the driver seat adjustment functions › Reading input (senders/sensors):

› Seat adjustment sender › Pressure sensors

› Activating the following actuators/control elements: › Seat adjustment motors › Compressor for multi-contour seat

Address Word 36


Special features Regarding the position and pressure state of the seat pneumatics, the seat settings are assigned to the car key.A seat memory, in which various positions are stored using a switch on the door panel, is not available for the Audi R8.

Seat adjustment

Designation Front Passenger Memory Seat Control Module J521


Installation location Below the front passenger seat (not shown)

Task Control of front passenger seat adjustment functions › Reading input (senders/sensors):

› Seat adjustment sender › Pressure sensors

› Activating the following actuators/control elements: › Seat adjustment motors › Compressor for multi-contour seat

Address Word 06


Special features As regards the position and pressure state of the seat pneumatics, the seat settings are assigned to the car key.A seat memory, in which various positions are stored using a switch on the door panel is not available for the Audi R8.

14

641_136

Selector Lever Sensor System Control ModuleJ587

Designation Selector Lever Sensor System Control Module J587


Installation location On selector lever

Task › Indication of selector lever position › Transfer of tiptronic commands

Address Word 81

Data bus communication Powertrain CAN participant

Special features › Can only be replaced together with the selector lever housing. › Selector lever is not mechanically connected to automatic transmission.

Selector lever

15

641_137

Transmission Control ModuleJ217 in DSG Transmission Mechatronic J743

641_138

Automatic Transmission Control Module 2J1006

Designation Transmission Control Module J217


Installation location In DSG Transmission Mechatronic J743

Task Monitoring and controlling the automatic transmission shift operations

Address Word 02


Special feature Immobilizer user

Transmission control modules

Designation Transmission Control Module 2 J1006


Installation location In the engine bay on the left under the engine trim

Task Controlling the auxiliary hydraulics and the parking lock function

Address Word C2


16

641_140

Engine Control Module 2J624

641_139

Engine Control ModuleJ623

Designation Engine Control Module J623


Installation location In the engine bay on the right below the engine bay trim

Task › Controlling the engine electronic functions for cylinders 1 – 5 › Master control unit for engine management › Activation of starter relays J906 and J907

Address Word 01

Data bus communication › Powertrain CAN participant › J623 is connected via a sub-bus system J624


Engine control modules

Designation Engine Control Module 2 J624


Installation location In the engine bay on the left under the engine trim

Task Controlling the engine electronic functions for cylinders 6 – 10

Address Word 11

Data bus communication › Powertrain CAN participant › J624 is connected via a sub-bus system J623


17

641_141

Airbag Control ModuleJ234

641_142

Sensor Electronics Control ModuleJ849

Designation Airbag Control Module J234


Installation location On the center tunnel below the center console

Task Deployment of airbags, safety belt pretensioners and battery interrupt igniter

Address Word 15

Data bus communication › Powertrain CAN participant › LIN master for Passenger Occupant Detection System Control Module J706

Special feature J234 sends the safety belt recognition signals to Seat Belt Microphone Control Module J886.

Airbag

Designation Sensor Electronics Control Module J849


Installation location On the center tunnel below the center console

Task The control module contains sensors for measuring vehicle acceleration in x, y and z directions, as well as vehicle rotation about the x, y and z axes.

Address Word 3B

Data bus communication FlexRay participant

Special feature It serves as a functional replacement for ESP Sensor Unit G419.

Sensor electronics control

18

641_143

ABS Control ModuleJ104

641_144

Electromechanical Parking Brake Control ModuleJ540

Designation ABS Control Module J104


Installation location In the vehicle front end behind the luggage compartment trim

Task › Anti lock braking system (ABS) › Electronic Stability Control (ESC) › Traction Control System (TCS) › Electronic Differential Lock (EDL) › Torque vectoring › Multi-collision brake

Address Word 03

Data bus communication FlexRay participant

Special feature The control unit can be replaced separately from the valve block using ESD protective mat VAS 6613.

Electronic Stability Control (ESC)

Designation Electromechanical Parking Brake Control Module J540



Task Controlling the parking brake function

Address Word 53

Data bus communication › Chassis CAN participant › J540 is also connected to ABS Control Module J104 via a sub-bus system

Parking brake

19

641_145

Power Steering Control ModuleJ500

641_146

Active Steering Control ModuleJ792

Designation Power Steering Control Module J500


Installation location Connected to steering gear

Task › Power steering › Servotronic speed-responsive power steering › Corrective steering intervention with ESP

Address Word 44

Data bus communication Chassis CAN participant

Special features › The control module with power steering motor can only be replaced together with the steering gear.

Power steering

Designation Active Steering Control Module J792


Installation location On the left hand module cross-member

Task The control module calculates the super-imposition angle required to implement the variable steering ratio.

Address Word 2B


Dynamic steering

20

641_147

Electronic Damping Control ModuleJ250

641_148

All Wheel Drive Control ModuleJ492

Designation Electronic Damping Control Module J250


Installation location Below the parcel shelf on the right at the heel plate

Task Adaptation of the damping characteristic

Address Word 14


Audi magnetic ride

Designation All Wheel Drive Control Module J492


Installation location On the cover of the main fuse panel adjacent to the battery

Task J492 calculates the clutch pressure required for the all-wheel drive clutch

Address Word 22


Special features Unlike the previous all-wheel drive clutch systems (Haldex systems), the all-wheel drive clutch system in the Audi R8 uses oil pressure and temperature sensors.

All-wheel drive

21

641_149

Automatic High Beam Assist Control ModuleJ844

641_150

Cornering Lamp And Headlamp Range Control ModuleJ745

Designation Automatic High Beam Assist Control Module J844


Installation location In rear view mirror

Task Automatic activation and deactivation of high beam in response to oncoming traffic

Address Word 20

Data bus communication Extended CAN participant

Special feature J844 can only change over the low beam/high beam headlights.

High beam assist

Designation Cornering Lamp And Headlamp Range Control Module J745


Installation location On the bulkhead at the bottom right

Task J745 is responsible for calculating auxiliary light functions such as the all-weather light, turning light and static cornering light, as well as for diagnosis of the power modules.

Address Word 55

Data bus communication › Extended CAN participant. › J745 is connected to the power modules for the LED headlights via a sub-bus system.

Light control

22

641_151

Steering Column Electronics Control ModuleJ527

641_152

Front A/C Display Control HeadE87

Designation Front A/C Display Control Head E87


Installation location In instrument panel, center

Task Controlling: › Temperature › Blower speed › Air flow distribution

Address Word 08

Data bus communication › Display and Operation CAN bus participant › E87 is the LIN master for:

› Control motors for flap activation 1 – 6 › Fresh Air Blower Control Module J126

Special features The seat heater and rear window heater switches are located in E87 where their input is read. However, Vehicle Electrical System Control Module J519 is responsible for activating the seat heaters while Comfort System Central Control Module J393 is responsible for activating the rear window heater relay.

Climate control

Designation Steering Column Electronics Control Module J527


Installation location On steering column

Task Connects the steering column stalk and the electrical components in the steering wheel to the vehicle's electronic components.

Address Word 16

Data bus communication › Display and operation CAN bus participant › J527 is the LIN master for:

› Multifunction Steering Wheel Control Module J453

Special features J527 transfers the signals from the Access/Start Authorization Button E408 to Comfort Systems Central Control Module J393.The steering angle sensor is integrated in J527, but is connected to the Chassis CAN by its own bus connection.

Steering column electronics

23

641_153

Rearview Camera System Control ModuleJ772

641_154

Seat Belt Microphone Control ModuleJ886

Designation Rearview Camera System Control Module J772


Installation location Below the parcel shelf on the right at the heel plate

Task › Reading input from Rearview Camera R189 › Processing and sending image data to Information Electronics Control Module 1 J794.

Address Word 6C

Data bus communication Display and Operation CAN participant

Special features › Control module and camera are two separate components.

Rear-view camera

Designation Seat Belt Microphone Control Module J886


Installation location Below the parcel shelf on the left at the heel plate

Task › Reading input data from the safety belt microphones in the driver's and front passenger's safety belts and from the microphone in the overhead module.

› Sending data to Information Electronics Control Module 1 J794

Address Word A6


Special features › If Seat Belt Microphone Control Module J886 is de-energized or defective, an internal relay establishes a direct connection between the roof microphone and Information Electronics Control Module 1 J794.

› J886 was only installed in the Spyder version of the previous R8.

Safety belt microphone

24

641_155

Tire Pressure Monitoring Control ModuleJ502

641_156

Instrument Cluster Control ModuleJ285

Designation Instrument Cluster Control Module J285

Equipment Always installed / Audi virtual cockpit

Installation location In instrument panel

Task Display of information relevant to the driver

Address Word 17

Data bus communication › Display and Operation CAN participant › MOST participant

Special features › J285 is connected the Information Electronics Control Module 1 J794 with an LVDS line. › The instrument cluster is not integrated with the immobilizer in the Audi R8.

Instrument cluster

Designation Tire Pressure Monitoring Control Module J502


Installation location Below a flap in the underbody on the left

Task › Pick-up and evaluation of signals from Tire Pressure Sensors G222, G223, G224 und G225 › Indication of tire pressures or issuance of warnings to Information Electronics Control

Module 1 J794

Address Word 65


Special features › The control module sends a PWM signal by cable to the trigger senders in the wheel arches with the command to query the pressure and temperature sensors in the wheel rims.

› The sensors in the tire valves send the data wirelessly to the control module.

Tire pressure monitoring

25

641_157

Information Electronics Control Module 1J794

Designation Information Electronics Control Module 1 J794


Installation location In the parcel shelf at the center

Task Controlling the Infotainment systems

Address Word 5F

Data bus communication › Display and Operation CAN participant › MOST participant › J794 is connected to Multimedia System Control Head E380 via the Modular Infotainment

Platform (MIB) CAN bus.

Special features › J794 is the system manager and the ring break diagnostics master for the MOST bus. › Connected to the Instrument Cluster Control Module J285 by a LVDS line (image transfer

to instrument cluster).

Information electronics

26

641_159

Digital Sound System Control ModuleJ525

Designation Digital Sound System Control Module J525

Equipment Installed only with B&O sound system


Task Activating the 13 speakers

Address Word 47

Data bus communication MOST participant

Special feature The subwoofer is housed in the passenger side wheel arch and its membrane faces outwards.

Soundamplification

27

Exterior lights

LED headlights

LED headlights are standard equipment on the R8 V10 and R8 V10 plus.

641_165

Headlight housing

Power modules for LED headlights "Service"

Daytime running light / side light / fiber optic turn signal

LED low beamLED high beam

All-weather light / turning light

Background lightDesign trim

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Light functions Type of bulb used Power

Daytime running light 6 LEDs with plastic optical fibers 18 watts

Side light Parking light is dimmed if light function is active 1.8 watts

Low beam 11 LEDs 22 watts

High beam 6 LEDs 22 watts

Turning light / static cornering light 2 LEDs at 100% and low beam 7 watts

All-weather light Turning light dimmed to 50% and low beam dimmed to 50%

Intersection light Turning light on both sides and low beam

Turn signal 9 LEDs 18 watts

Special features of the light functions

The daytime running light is dimmed for the duration of the turn signaling cycle.

The low beam and the parking light are used for the Coming Home/Leaving Home function.

High beam Low beam

Daytime running light/ parking light

Turn signal

Turning light/ all weather light/ intersection light

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Schematic diagram of the activation mechanism

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Activation

Vehicle Electrical System Control Module J519 supplies voltage to Left and Right LED Headlamp Power Output Modules 1, A31 and A27 as well as for Left and Right LED Headlamp Power Output Modules 2, A28 and A32.

The power modules A31/A27 are responsible for the daytime running light/side light and turn signal functions.

Power modules 2 A32/A28 are responsible for activating the LEDs for low beam, high beam, all-weather light, turning light, static cornering light as well as the headlight fan.

Service

Headlight range adjustment is not implemented for the headlights on the Audi R8. Cornering Lamp and Headlamp Range Control Module J745 is only used to operate the cornering lights. The LED headlight bulbs cannot be replaced. Only the outer control units can be replaced separately.

Optional equipment

The LED headlights are combined with High beam assist.

External terminal 15 supply

Left LED Headlamp Power Output Module 1A31

LEDs for turn signal

Left Daytime Running Lamp And Position Lamp LED ModuleL176

LEDs for daytime running light/side light

Left LED Headlamp Power Output Module 2A32

LEDs for low beamLEDs for high beamLEDs for all-weather light/turning light/static cornering light/intersection lightHeadlight fan

Voltage supply

Voltage supply

Activation mechanism:

• Daytime running light• Side light• Turn signal

LED headlights(Left hand side of vehicle)


Cornering Lamp And Head-lamp Range Control ModuleJ745

Convenience CAN

Extended CAN

Sub-bus systems

Discrete lines

Key:

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Tail lights

The tail lights of the Audi R8 are integrated in the rear body side sections and border the bumper cover or the ventila-tion grilles at the bottom. Only LEDs are used for lighting.

The sequential turn signal function has an additional elec-tronic module in the tail light. The sidemarkers for the North American Region are not integrated in the tail lights, but rather have been transferred to the body side sections of the vehicle as separate lights.

Activation

The tail lights are activated by Comfort System Central Control Module J393. J393 also determines whether sequential or conventional turn signaling is required.

The tail light LEDs are used for the Coming Home/Leaving Home function.

Service

Neither individual LEDs nor the electronic components for "dynamic turn signal operation" can be replaced on the tail lights. In case of damage, the entire tail light must be replaced.

Brake light

Turn signalTail lightBack-up light

Rear fog light

Tail light

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31

Audi drive select

Functional characteristics

The Audi R8 is equipped with the Audi drive select system.With Audi drive select, it is possible to modify the vehicle characteristic. The mode can be changed when the car is stationary or while driving.

The systems shown in the illustration below can be con-trolled via the Audi drive select system.

In the Audi R8 the driver can select between the following drive modes: Comfort, Auto, Dynamic, Individual and Performance.

The Audi drive select system can be set using the Audi drive select button in the steering wheel or using the Car menu via Multimedia System Control Head E380. The selected mode is always displayed in the Audi virtual cockpit.

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Steering Variable steering torque

ESC Variable characteristic

Automatic transmissionVariable shift program

Engine soundSwitchable flap control

drive selectAccessible via Car menu; select with rotary push knob

Dynamic steering Variable steering ratios

Accelerator/engine Variable characteristic

All-wheel drive Variable power distribution

Damper control Variable damper rate

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comfort auto dynamic individual

Accelerator/engine balanced balanced sporty

Automatic transmission balanced balanced sporty

Steering comfortable balanced sporty

All-wheel drive stable stable sporty comfort, auto, dynamic

ESC full system full system full system

Engine sound2) balanced balanced/sporty3) sporty

Dynamic steering2) balanced and indirect balanced and indirect sporty and direct

Damper control2) comfortable balanced sporty

Audi drive select function

Performance - dry Performance - wet Performance - snow

Accelerator/engine performance4) performance4) performance4)

Automatic transmission performance5) performance5) performance5)

Steering sporty sporty sporty

All-wheel drive performance (neutral in dry conditions)

performance (neutral in wet conditions)

performance (neutral in snow)

ESC performance performance performance

Engine sound2) sporty sporty sporty

Dynamic steering2) sporty and direct sporty and direct sporty and direct

Damper control2) balanced balanced comfortable

Standard equipment

Optional equipment1)

1) Standard with V10 plus2) Optional equipment3) Depending on selector lever position4) Accelerator map, load shock absorption, idling speed boost, engine sound during acceleration5) Shift point adjustment, torque increase during upshifting, no automatic upshifting in M mode

The tables below show the functional characteristics of all systems which form the Audi drive select handling system.

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Multifunction steering wheel

Two steering wheels are available for the Audi R8. A new multifunction steering wheel, the R8 sport leather steering wheel (PR 2ZC), is standard. The "drive select" and "START ENGINE STOP" buttons are integrated. The individ-ual drive select modes can be selected using the "drive select" button. Because the Audi R8 has a keyless start system, the "START ENGINE STOP" button is used to switch the ignition on and off as well as to start and stop the engine.

The optional R8 performance leather steering wheel (PR 2FJ) has 2 additional buttons.

› The engine sound button adjusts the engine sound directly by opening or closing the exhaust flap.

› The "wet" performance mode is activated by pressing the Performance button. If performance mode is active, the adjusting ring can be used to select from the following modes:

› "snow". › "wet". › "dry".

If performance mode is selected, the vehicle switches to an even more sporty setup.

The driver can exit performance mode in the following ways:

› Pressing the Performance button the vehicle now switches back to the previous Audi drive select setting.

› Pressing the "drive select" button: the vehicle now switches back to the previous Audi drive select setting.

› Pressing the rotary push knob on the MMI when the Car menu is open: the vehicle now switches back to the previous Audi drive select setting.

› Switching the ignition off and on again: the vehicle now switches back to the Audi drive select setting "dynamic".

Multifunction Steering Wheel Control Module J453 records all button movements and relays the signals to Steering Column Electronics Control Module J527. J527 transfers this information via CAN to the relevant control modules. To ensure a rapid transfer of shift commands, all move-ments of the steering wheel shift paddles are transmitted by discrete wires to Transmission Control Module 2 J1006. The Start Engine Stop button is also connected directly to Comfort System Central Control Module J393.

Multifunction Steering Wheel Control Module J453 is diagnosed using Address Word 16.

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Display in Engine sound "Sport" mode

Display in Performance mode "snow" setting

Display in Performance mode "wet" setting

Display in Performance mode "dry" setting

Date & time

kph

150 km

12:00 +22,5°C

Engine soundSport

85 °C 87 °C

438km 0,0km

12:00

Tire press. loss indicator

24 °C

24 °C

24 °C

24 °C

2.2 bar

2.2 bar

2.2 bar

2.2 bar

Performance

kph

150 km

12:00 +22,5°C

wet

85 °C 87 °C

438km 0,0km


24 °C

24 °C

24 °C

24 °C

2.2 bar

2.2 bar

2.2 bar

2.2 barsnow dry

Performance

kph

150 km

12:00 +22,5°C

wet

85 °C 87 °C

438km 0,0km


24 °C

24 °C

24 °C

24 °C

2.2 bar

2.2 bar

2.2 bar

2.2 barsnow dry

Performance

kph

150 km

12:00 +22,5°C

wet

85 °C 87 °C

438km 0,0km


24 °C

24 °C

24 °C

24 °C

2.2 bar

2.2 bar

2.2 bar

2.2 barsnow dry

34

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Audi drive select button

Engine sound button

START ENGINE STOP button

Audi drive select button START ENGINE STOP button

Performance button with adjusting ring for selecting the snow, wet and dry modes

Audi R8 standardleathersteeringwheel

Audi R8 performanceleathersteeringwheel

35

As in the 2016 Audi TT, the second generation of the Modular Infotainment Platform (MIB 2) is installed in the Audi R8.

Because the layout of the controls as well as all displays is focused entirely on the driver, the Audi R8 does not have a separate MMI display. All MMI displays are rendered in the Audi virtual cockpit.

The operating concept of the Audi TT has also been adopted for the Audi R8. The standard multifunction steering wheel enables the driver to control virtually all functions without looking away from the road.

MMI Navigation plus (i8H) with Audi connect (EL3)

Audi virtual cockpit (9S8)

3D SSD navigation system (7UG)1))

MMI touch (UJ1)

Multifunction steering wheel, high version (2PF)

AM/FM radio with phase diversity and background tuner

Jukebox (approx. 11 GB)

DVD drive (audio/video)

2 SDXC card readers

Audi music interface with two USB ports and AUX-IN jack (UE7)

Audi sound system (9VD)

Bluetooth interface for HFP and A2DP (9ZX)

SiriusXM® Satellite Radio with 90-day trial subscription

Bang & Olufsen Sound System (9VS) (standard on R8 V10, optional on R8 V10 plus)

HD radio technology

Audi connect

INRIX XD® Traffic (req. Audi connect® subscription)Audi music interface with two USB portsBLUETOOTH® streaming audio for compatible devicesBLUETOOTH® wireless technology preparation for compatible mobile phones

Telephone

Navigation

Map

Audi connect

Settings

kph

150 km

12:00 +22,5°C

Infotainment

36

Sound systems

The Audi sound system is standard equipment on the R8 V10 plus. It has five speakers and delivers a total of 140 watts power. The speakers are powered through Informa-tion Electronics Control Module 1 J794 and can be diag-nosed individually.

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Audi sound system

Left Front Treble SpeakerR20

Center SpeakerR208

Right Front Treble SpeakerR22

Left FrontBass Speaker R21

Right Front Bass SpeakerR23

37

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Bang & Olufsen Sound System

The Bang & Olufsen sound system is standard equipment for the R8 V10 and optional for the R8 V10 plus model. It has 13 speakers with a total power output of 550 watts.

The speakers are amplified by Digital Sound System Control Module J525 which is located behind the left seat. It is connected to Information Electronics Control Module 1 J794 via the MOST bus.

To ensure there is enough bass volume, a subwoofer is installed in the front passenger footwell in addition to the two woofers in the front doors. The subwoofer membrane is installed facing outwards towards the wheel arch. It can be removed and installed via the footwell after taking out the glove box.

Center Speaker 2 R219

Left Front Treble Speaker R20

Center SpeakerR208

Right Front Treble Speaker R22

Left Front Bass Speaker R21

Left Front Midrange Speaker R103

Right Front Bass Speaker R23

Right Front Midrange Speaker R104

Right Rear Midrange Speaker R106,Right Rear Treble Speaker R16

Left Rear Midrange Speaker R105,Left Rear Treble Speaker R14

SubwooferR211

Digital Sound System Control Module J525

38

Safety belt microphone

Safety belt microphones are integrated in both safety belts. An additional conventional microphone is installed in the overhead module. Seat Belt Microphone Control Module J886 monitors and controls which microphone is used.

The safety belt microphones are only used if the driver’s safety belt is fastened. Otherwise, the microphone in the overhead module is used. The signals from the safety belt microphones are sent first to Airbag Control Module J234 via the Infotainment CAN and then to J886. J886 also receives information about the status of the front passen-ger - activated or not activated.

If the driver’s safety belt is not fastened, nor the passenger side airbag activated, the passenger side microphone is not used.

The safety belt microphone consists of three microphone capsules. The wires for the individual capsules are woven into the safety belt. When the safety belt microphone is active, J886 continuously monitors which of the three capsules is delivering the best signal and sends that signal to Information Electronics Control Module 1 J794.

Seat Belt Microphone Control Module J886 is not active until it receives a voltage signal from J794 indicating there is a phantom feed the through “micro 1” wire. When acti-vated, J886 has self-diagnostic capability and can be accessed through Address Word A6.

If J886 loses voltage or is defective, an internal relay estab-lishes a direct connection between the roof microphone and Information Electronics Control Module 1 J794.

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Seat Belt Microphone Control Module J886

Driver Microphone 1R224

Front Passenger Microphone 1R227

Microphone Unit In Front Roof ModuleR164

Terminal 31 Terminal 30 Connection to infotainment CAN Information Electronics Control Module 1J794

Microphone capsules

39

Antenna overview

The antennas of the R8 are located throughout the vehicle. Installation is dependent on vehicle specification. Only the antennas needed for a particular feature are installed.

LTE Antenna 2R306

LTE Antenna 1R297

FM Antenna

TV3/FZV Antenna

Antenna Amplifier 2R111

Telephone AntennaR65

GPS AntennaR50

40

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Antenna AmplifierR24

Antenna Amplifier 3R112

AM/FM1 Antenna

Satellite AntennaR170

41

Introduction

The 2017 Audi R8 is equipped with a single zone automatic climate control system.

Six servomotors are used to control air flow and tempera-ture. They are all identical in design and connected in series to Front A/C Display Control Head E87. The servomotors must be programmed via the Basic settings/auto-address-ing procedure using the VAS Scan Tool if replaced.

E87 is connected to the display and operation CAN bus and can be accessed using the VAS Scan Tool under Address Word 08.

Climate control operation is supported by:

› Sunlight Photo Sensor G107 (discrete wiring to E87). › Combined Air Quality Sensor G238 and Humidity

Sensor In Fresh Air Intake Duct G657. › High Pressure Sensor G65. › Humidity Sensor G355.

G238/G657, G65 and G355 are LIN bus participants con-nected to Vehicle Electrical System Control Module J519. Their data is provided to A/C Display Control Head E87 via Data Bus On Board Diagnostic Interface J533.

Servomotors

Back Pressure Door Motor V71

Fresh Air Door MotorV438

Defroster Door MotorV107

Footwell Door MotorV261

Temperature Control Door MotorV68

Center Vent Adjustment MotorV102

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Dust and pollen filter

Climate control

42

E87 has three turn-and-push knobs. The center turn-and-push knob has a display which can be used to set the cabin temperature.

The seat heater buttons are located in a row of buttons above the turn-and-push knob.

E87 has two cabin temperature sensors. Depending on software version of control unit E87, either one of or both of the sensors may be active. If both the temperature sensors are active, the hardware computes a valid value from the data provided.

Front A/C Display Control Head E87

Temperature adjustment display

ButtonsLeft seat heater button

Interior temperature sensorInterior temperature sensor

Right seat heater button

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Passenger compartment ventilation

As with all Audi models, the R8 has a forced air ventilation system. This prevents the build-up of over-pressure when closing a door.

Air flows from behind the parcel shelf towards the ‘B’ pillars and then through the speaker trims towards the Audi Space Frame body.

The air flows through body intakes to both vent trims located behind the doors on the exterior of the lower ‘B’ pillars.

Out vent trims

Inner speaker trims

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Refrigerant circuit

The refrigerant circuit has two condensers. They are identi-cal in design and like the two outer engine coolant radia-tors, are installed at a rotation angle of 180 degrees. The refrigerant tube to and from the expansion valve is the familiar internal heat exchanger design (coaxial refrigerant line).

The A/C compressor has a direct clutch and is driven by the engine through a drive shaft. An overload cut-out that can interrupt power flow between the engine and compressor in case of compressor failure is integrated in the A/C clutch. R134 refrigerant is used in this vehicle.

After replacing the components of the refrigerant circuit, care must be taken to ensure that the system is filled with the correct level of refrigerant oil. The following quantities of refrigerant oil must be added to the refrigerant circuit after replacing the following components:

› Replacing a single condenser: + 0.33 oz (10 ccm). › Replacing both condensers: + 0.66 oz (20 ccm). › Replacing the evaporator: + 0.66 oz (20 ccm).

The high and low pressure service connections for refilling refrigerant are located near the receiver/drier and can be accessed through a flap in the luggage compartment.

Service operations

Coaxial refrigerant line

Condensers A/C compressorCondensation drain

Service connectionsDrier

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Front A/C Display Control Head E87

44

Inspection and maintenance

NoteThe specifications in the current service literature generally apply. It is important to comply with the approved oil standard when changing the oil.

Overview of maintenance intervals for vehicles in the USA

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10,000 miles /1 year

20,000 miles /2 years




Oil

chan

ge s

ervi

ce

Insp

ecti

on w

ith

oil c

hang

e

Oil

chan

ge s

ervi

ce

Insp

ecti

on w

ith

oil c

hang

e

Oil

chan

ge s

ervi

ce

The Audi R8 is subject to fixed inspection and maintenance intervals in the USA and Canada.

The value for the next oil change is 10,000 miles / 365 days for new vehicles.

Service

45

The 2011 Audi A8 Convenience Electronicsand Networking Systems

Self-Study Program 970103

1

The Audi 1.8L and 2.0L Third Generation EA888 Engines

eSelf-Study Program 920243

i

The 2016 Audi TT Vehicle Electrics, Electronics, and Infotainment Systems


The 2012 Audi A7 Running Gear and Suspension Systems

Self-Study Program 990303

The 2015 Audi A3 Running Gear and Suspension System


i

The 2017 Audi Q7 Onboard Power Supply and Networking System


For more information about the technology of the Audi R8, please refer to the following self study programs.

SSP 923603The 5.2l V10 FSI Engine Design and Function

SSP 992803Audi Dynamic Steering

SSP 970103 The 2011 Audi A8 Convenience Electronics and Networking Systems

SSP 990303 The 2012 Audi A7 Running Gear and Suspension Systems

SSP 920243 The Audi 1.8L and 2.0L Third Generation EA888 Engines

SSP 960143 The 2015 Audi A3 Running Gear and Suspension System

SSP 970153 The 2016 Audi TT Vehicle Electrics, Electronics, and Infotainment Systems

SSP 970163 The 2017 Audi Q7 Onboard Power Supply and Networking System

i

The 2017 Audi R8 Introduction


i

Front final drive 0D4


SSP 990363The 2017 Audi R8 Introduction

SSP 950163Frontfinaldrive0D4

Self-study programs

audi://docs/s?d=923603_Audi_5.2L_V10_FSI.pdf

audi://docs/s?d=992803_Audi_Dynamic_Steering.pdf


audi://docs/s?d=990303_2012_Audi_A7_Running_Gear_Suspension.pdf

audi://docs/s?d=920243_Third_Generation_Audi_1.8L_and_2.0L_Engines_from_the_EA888_Model_Family.pdf

audi://docs/s?d=960143_2015_Running_Gear_and_Suspension.pdf

audi://docs/s?d=970153_The_2016_Audi_TT_Vehicle_Electrics_Electronics_and_Infotainment_Systems.pdf


audi://docs/s?d=990363_The_2017_Audi_R8_Introduction.pdf

audi://docs/s?d=950163_Front_final_drive_0D4.pdf

46

From the accessaudi.com Homepage:

› Click on the “ACADEMY” tab

› Click on the “Academy site” link

› Click on the Course Catalog Search and select “970173 - The 2017 Audi R8 Electrics, Electronics,

and Infotainment Systems”

Please submit any questions or inquiries via the Academy CRC Online Support Form

which is located under the “Support” tab or the “Contact Us” tab of the Academy CRC.

Thank you for reading this eSelf-Study Program and taking the assessment.

The Knowledge Assessment is required for Certification credit.

You can find this Knowledge Assessment at:www.accessaudi.com

An On-Line Knowledge Assessment (exam) is Available for this eSelf-Study Program.

Knowledge assessment

http://www.accessaudi.com

http://www.accessaudi.com

47

All rights reserved.Technical specifications are subject to change without notice.

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Documents

The 2017 Audi R8 Electrics, Electronics, and …The 2017 Audi R8 Electrics, Electronics, and Infotainment Systems eSelf Study Program 970173 ii This eSSP contains video links which